Cho 2,7g Al phản ứng vừa đủ với dung dịch H2SO4 20%. a) Tính thể tích khí thu được ở đktc.
b)Tính khối lượng dung dịch H2SO4 20% cần dùng.
c)Tính nồng độ phần trăm của dung dịch thu được sau phản ứng

Amines are good nucleophiles, even though they are neutral molecules. how would the rate of an sn2 reaction between an amine and an alkyl halide be affected if the polarity of the solvent is increased? amines are good nucleophiles, even though they are neutral molecules. how would the rate of an reaction between an amine and an alkyl halide be affected if the polarity of the solvent is increased? because both reactants in the rate-limiting step are neutral, the reaction will be faster if the polarity of the solvent is increased. because both reactants in the rate-limiting step are neutral, the reaction will be slower if the polarity of the solvent is increased. because both reactants in the rate-limiting step are neutral, the reaction will occur at the same rate if the polarity of the solvent is increased. request answer